John vincent



(Modem J. VINCENT, Jr. v STOVE AND OTHER SHEET METAL PIPES.

No. 274,421. Patented Mar.20,1883.

Li Z

WITNESS MENTOR I ATTORNEYS.

n was, Muihogmamr. WIINHQNIL n.c.

UNITED STATES JOHN VINCENT, JP, OF ST. JAMES, MICHIGAN, ASSIGNOR OF ONE-HALF TO MICHAEL F. ODONNELL, MICHAEL FITZSIHMONS, ANDREW BUDDY, GEORGE MILLER, ALANSON CAMPBELL, SMITH CAMPBELL, J CH3 OBR-IEN, AND WILLIAM GIBSON, ALL OF SAME PLACE.

STOVE AND OTHER SHEET-METAL PIPES.

SPECIFICATION forming part of Letters PatentNo. 274,421, dated March 20, 1883. Application filed November 18, 1882. (Modem To all whom it may concern:

Beit known that I, JOHN VINCENT, Jr., of St. James, in the county of Manitou, in the State of Michigan, have invented new and 5 useful Improvements in Stove and other Sheet- Metal Pipes, of which the following is a full, clear, and exact description.

This'invention consists in a novel method of constructing and fitting together stove-pipe sections or lengths, whereby the diameter of the stove-pipe may be varied as required, the sections or lengths are united by screwing one into or over the other, and special means are provided for holding together said sections, which have an open or scroll lap throughout their length, substantially as hereinafter described. Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 represents a broken longitudinal view or elevation of two sections or lengths of stove-pipe embodying my invention. Fig. 2 is a transverse section through one of said pipe-lengths, aud Fig. 3 a longitudinal sec tion of part of one of the lengths.

A A indicate two stove-pipe sections or lengths, each of which is made with a scroll or open lap of its one mayginal portion over the other throughout the length of the section, and which have their bodies formed at regular or set distances apart with longitudinal grooves, creases, or gutters b, and-their ends 5 spun or indented to form screw-threads c.

C O are saddle-like clamps or'staple-keys, which fit over the ends of the overlapping portions of each stove-pipe length A to hold them together. By removing said keys from both 40 ends of a stove-pipe section said section may be expanded or contracted diam etrically-that is, have more or less lap of its longitudinal marginal portions, according to the size ofthc pipe required, and the creases or grooves b of the overlapping portions interlocked with one another--after which said keys are replaced to hold the adjusted longitudinal marginal portions in place. By the measurements which the creases or gutters b at the overlapping portions ofthe bodies of the pipe-sections af- 0 ford, the pipe may be readily expanded or con tracted to any one of several given sizes.

When fitting the staple-keys C C to their places to hold a pipe-section closed at a given adjustment before fitting two or more sections 53 together, said keys should be applied over the ends of the overlapping portions opposite the gutter b, that runs lengthwise next to the outside edge d of the pipe-section, as shown by full lines in Figs. 1 and 2.

When fitting'or screwing the one pipe-section into the other-say the bottom section A shown in Fig. 1 into the top sectiouA shown in the same fignrethe key 0 on the upper edge of the lower pipe-section is slipped from 6 its position opposite the longitudinal gutter 1), next to the edge (1, and from its hold on the lap-joint of said section onto the single thickness of metal on the opposite side of the edge d, as shown by dotted lines in Figs. 1 and 2. 0 This provides for the bottom hey C of the upper pipe-section A passing over the upper key C of thelower pipesection when screwin g said sections together, and such release of the key from the lap of the entering or upper 7 end of the lower pipe-section is then immaterial as regards the hold of such portion of said lower pipesection, as the entering of it within the, thread of the upper section secures it.

The keys C should be made of about the same thickness of metal as the pipe-sections, so that when slipped onto the single thickness of metal of said sections the key which is so adjusted will not project beyond or outside the overlapping edge (I of such pipe-section, 8 5 which prevents the key of the other pipe-section at the meeting ends of the sections from comingin contact with it, and provides for the screwing of the pipe-sections together. The key which is on the outside will always remain in place, but may be removed when it is required to take the pipe down, and it will not unscrew, owing to being rusty.

To prevent the springing apart of the pipesections at their centers, the overlapping por- 93 tions of the bodies of the sections may be 2 I erases flexed, as shown at the left hand of Fig. 3- that is, the outer overlapping portion be arched outward and theinner lapping portion be reversely bent-s0 that when fitting the keys 0 O on the ends of the section its center portion will bind or fit close.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is g r I 1. A sheet-metal pipe section or length arranged to overlap at its longitudinal marginal portions, and having its body constructed with longitudinal creases or grooves b and its ends with screw-threads c, essentially as and for the purposes herein set forth.

2. The combination of the staple-keys 0 with the pipe-sections A A, made to overlap at their longitudinal marginal portions, and

having their bodies constructed with, interlocking creases or gutters .b and their ends with screw-threads c, substantially as and for the purposes specified.

' JOHNVINOENT, JR.

I Witnesses:

FERDINAND BOUGHTON, OHAUNCEY B. SooT'r. 

